@property (weak, nonatomic) IBOutlet UILabel *contentLabel;

@end

@implementation WJAboutMFViewController

 - (void)viewDidLoad {

    [super viewDidLoad];

    // 調(diào)整行間距

    NSMutableAttributedString *attributedString = [[NSMutableAttributedString alloc] initWithString:self.contentLabel.text];

    NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];

    [paragraphStyle setLineSpacing:7];

    paragraphStyle.firstLineHeadIndent=32;

    [attributedString addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:NSMakeRange(0, [self.contentLabel.text length])];

    self.contentLabel.attributedText = attributedString;

    [self.contentLabel sizeToFit];

    self.contentLabel.numberOfLines=0;

}